A pregnancy test performed on the same date as a preventive service may be reported separately using the CPT code appropriate to the test (e.g., 81025, âUrine pregnancy test, by visual color comparison methodsâ) and a diagnosis code from the V72.4X series (pregnancy examination or test).
This process is called continental drift. The plates move because of convection currents in the Earth's mantle. These are driven by the heat produced by the decay of radioactive elements and heat left over from the formation of the Earth.
Tectonic shift is the movement of the plates that make up Earthâs crust. The Earth is made up of roughly a dozen major plates and several minor plates. The Earth is in a constant state of change.Earthâs crust, called the lithosphere, consists of 15 to 20 moving tectonic plates.The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earthâs mantle and fit snugly against one another.he Earth is in a constant state of change. Earthâs crust, called the lithosphere, consists of 15 to 20 moving tectonic plates. The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earthâs mantle and fit snugly against one another.